ARB
(cant)
8. One last
vector
exists in
the
waveform.
Press V MKR
to
display
the
number
of
Vec
-
tor
12.
Turn the
Modify
knob
to
display
Vector
13.
This is
the
Return
to
Start
Vec
-
tor
which
corresponds
to
the
SYNC signal's negative pulse. This
vector
returns
to
the
Start/Finish
point
and remains there
until
the
ARB
wave
begins
the
next
period.
The V LEN is modifiable,
but
not
the
V HGT.
To change
the
waveform
characteristics, adjust FREQ,
AMPTD,
and OFFSET.
Ad-
justing
PHASE
will
distort
the
waveform.
Modifying
other
ENTRY parameters is
not
allowed.
It
is easiest
to
build a
waveform
at maximum amplitude and frequency
for
ease
of
viewing,
then
change
it
as needed. To select individual
vectors,
press V
MKR
then
dial
to
the
desired
vector.
Modify
V HGT and V LEN as necessary.
Recalling an ARB
Waveform
The ARB
key
and
the
It
AR
1"
HP-IB command enable
the
ARB
definition
ofthe
3314A
.
It
ARx"
(x = 0
through
5)
will
be displayed
for
Yz
second
after
enabling ARB
to
indicate
the
active
ARB wave. Pressing RCL, ARB, and then one
of
register 0
through
5
("RWO"
through
"RW5"
HP-IB commands) recalls one
of
six ARB
waves.
Though
you
may
store standard
waveforms
to
specific registers
after
defining
the
parameters, ARB
waveforms
are simultaneously built and stored in
the
register
of
your
choice in non-volatile
memory.
Even
if
power
is lost,
the
wave
parameters remain
in-
tact.
Simply
recall
the
ARB
wave
function
to
restore
the
output
signal.
46
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